Alert archive / Montana / Flash Flood Warnings in 2001
Flash Flood Warning 22, NWS Billings, MT
NWS Billings, MT issued this flash flood warning at Jul 25, 2001, 1:31 AM MDT for Treasure County, Montana. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 25, 2001, 1:31 AM MDT (07:31 UTC)
- Expired
- Jul 25, 2001, 3:30 AM MDT
- In force
- 119 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Treasure County, MT
The radar
The Billings radar (KBLX), 110 km from the middle of the area, began a volume at 07:35 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 7.5 hours before the alert went out and 229 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 873 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1463 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 329 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 7.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS55 KBYZ 250731
FFWBIL
FFWBIL
MTC103-250930-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
131 AM MDT WED JUL 25 2001
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL TREASURE COUNTY IN SOUTHEAST MONTANA
* UNTIL 330 AM MDT
* AT 131 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA.
* THUNDERSTORMS ARE CONTINUOUSLY REDEVELOPING OVER THE WARNED AREA...
RESULTING IN EXCESSIVE RAINFALL.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.
ABSOLUTELY DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER
COVERS THE ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. NEVER ATTEMPT TO CROSS HIGH WATER IN A VEHICLE OR ON FOOT.
$$
LAT...LON 4606 10706 4600 10695 4614 10699 4614 10701
4622 10712 4603 10720 4607 10708What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Billings, MT wrote its last area forecast discussion before this flash flood warning went out at Jul 24, 9:40 PM MDT, 3 hours 51 minutes earlier.
Area forecast discussion, Jul 24, 9:40 PM MDT, 3 hours 51 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
940 PM MDT TUE JUL 24 2001
.WED AND THU...
WILL BE MAKING SOME UPDATES SINCE CONVECTION IS STARTING TO BREAK OUT
BILLINGS WEST. THE CONVECTION APPEARS TO BE THE RESULT OF A WEAK UPPER
DISTURBANCE INTERACTING WITH A CONVERGENT ZONE...AS BILLINGS DEW POINT
HAS BEEN INCREASING THIS EVENING...ALONG WITH THE DEPTH OF THE EAST
WIND ACCORDING TO THE VAD PROFILE. STROBIN
.FRI...SAT...SUN...MON...TUE...
MRF LOOKS LIKE THE ODD MODEL OUT THIS RUN COMPARED TO YESTERDAY. MAIN
DIFFERENCES CONTINUE TO BE NEXT TROUGH THAT DIGS INTO PACIFIC
NORTHWEST SATURDAY. MRF IS THE MOST PROGRESSIVE WITH THIS TROUGH...
MOVING IT OVER MONTANA SUNDAY AND MONDAY. ECMWF AND UKMET BRING THE
TROUGH TO WESTERN MONTANA THEN SHEAR ENERGY OFF TO THE NORTH WITH MEAN
TROUGH REMAINING OVER WEST COAST...KEEPING US WARM AND UNSETTLED
SOUTHWEST FLOW. ECMWF/UKMET HAVE 500 MB HEIGHTS OF 588 OVER SOUTHEAST
MONTANA WITH MRF AROUND 573. WITH THIS IN MIND WILL BE GOING 5-10
DEGREES WARMER THAN MRF. ONLY DAY THAT LOOKS POSSIBLY DRY IS FRIDAY...
BUT WITH WESTERLY FLOW OVER AREA SO NO REASON TO BREAK DAY OUT. RASCH
WED THU FRI SAT SUN MON TUE
-----------------------------------------------------------
BIL 057/085 058/086 062/085 063/088 059/083 062/088 060/085
22/T 33/T 33/T 33/T 33/T 33/T 33/T
LVM 048/084 053/085 057/083 058/085 055/080 058/083 056/081
22/T 33/T 33/T 33/T 33/T 33/T 33/T
HDN 054/087 058/089 060/087 061/090 057/085 060/090 058/087
22/T 33/T 33/T 33/T 33/T 33/T 33/T
MLS 059/087 062/087 062/088 064/090 063/085 064/090 063/088
22/T 33/T 33/T 33/T 33/T 33/T 33/T
4BQ 058/086 060/086 061/087 063/089 062/084 063/089 062/087
42/T 33/T 33/T 33/T 33/T 33/T 33/T
BHK 057/086 059/086 059/086 061/088 060/083 060/088 061/086
42/T 33/T 33/T 33/T 33/T 33/T 33/T
SHR 054/088 057/088 058/085 059/088 059/086 059/088 058/085
22/T 33/T 33/T 33/T 33/T 33/T 33/TThe office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 10:42 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 63 min |
| Jul 24, 11:48 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 57 min |
| Jul 25, 12:43 AM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 62 min |
| Jul 25, 12:44 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 61 min |
| Jul 25, 1:33 AM MDT | Severe Thunderstorm Warning | BYZ | Custer | 57 min |
| Jul 25, 1:43 AM MDT | Flash Flood Warning | BYZ | Custer, Rosebud | 3 hr |
| Jul 25, 1:45 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 60 min |
| Jul 25, 3:28 AM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 47 min |
| Jul 25, 3:36 AM MDT | Severe Thunderstorm Warning | BYZ | Carter | 69 min |
Nearby
Flash Flood Warnings in Montana, 2001Every flash flood warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.